WO2023277541A1 - 개선된 스파클링 효과를 갖는 다중 색상 진주 광택 안료 및 이의 제조방법 - Google Patents
개선된 스파클링 효과를 갖는 다중 색상 진주 광택 안료 및 이의 제조방법 Download PDFInfo
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- WO2023277541A1 WO2023277541A1 PCT/KR2022/009248 KR2022009248W WO2023277541A1 WO 2023277541 A1 WO2023277541 A1 WO 2023277541A1 KR 2022009248 W KR2022009248 W KR 2022009248W WO 2023277541 A1 WO2023277541 A1 WO 2023277541A1
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- oxide layer
- value
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- pigment
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- 239000000049 pigment Substances 0.000 title claims abstract description 95
- 230000000694 effects Effects 0.000 title abstract description 18
- 238000002360 preparation method Methods 0.000 title abstract description 4
- 239000000758 substrate Substances 0.000 claims abstract description 54
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 47
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 47
- 239000011521 glass Substances 0.000 claims abstract description 29
- 239000000243 solution Substances 0.000 claims description 43
- 239000000725 suspension Substances 0.000 claims description 35
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 30
- 239000012266 salt solution Substances 0.000 claims description 27
- 239000002932 luster Substances 0.000 claims description 25
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000010992 reflux Methods 0.000 claims description 16
- 238000004448 titration Methods 0.000 claims description 14
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 10
- 230000003301 hydrolyzing effect Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- -1 accessories Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 229910004283 SiO 4 Inorganic materials 0.000 claims description 3
- 239000002537 cosmetic Substances 0.000 claims description 3
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- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 229910003902 SiCl 4 Inorganic materials 0.000 claims description 2
- 239000002928 artificial marble Substances 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 238000009408 flooring Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 239000003086 colorant Substances 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 84
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 45
- 230000000052 comparative effect Effects 0.000 description 36
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
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- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000976 ink Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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- C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- A61K2800/436—Interference pigments, e.g. Iridescent, Pearlescent
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- C—CHEMISTRY; METALLURGY
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
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- C04B2111/54—Substitutes for natural stone, artistic materials or the like
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- C04B2111/545—Artificial marble
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
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- C09C2200/301—Thickness of the core
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
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Definitions
- the present invention relates to a pearlescent pigment, and more particularly, to a pearlescent pigment having high color intensity and various colors according to viewing angles by using a difference in refractive index of a multi-layer metal oxide layer coated on a platelet-shaped substrate and improved sparkling by physical properties of the substrate. It relates to a pearlescent pigment having an effect and a method for producing the same.
- Pearlescent pigments are used in many fields of industry, especially in automotive, decorative coatings, plastics, paints, printing inks and in cosmetic formulations.
- a luster pigment based on a transparent platelet-shaped substrate without a 'high contrast' metallic luster is coated with a high refractive index metal oxide layer (eg TiO 2 ) and an optional absorber layer on the mica platelets.
- a high refractive index metal oxide layer eg TiO 2
- an optional absorber layer on the mica platelets.
- These pigments when viewed in a flat state, exhibit a specific interference color that depends on the thickness of the TiO 2 layer, which gradually fades as the viewing angle becomes more inclined, eventually turning gray or black. At this time, although the interference color does not change, it is observed that the color saturation is lowered. In other words, the color change range according to the change in the observation viewing angle is narrow.
- pigments using platelet-type substrates that are widely used in the market currently have a problem in that they lack effects such as sparkling among optical properties, and as described above, the range of color change according to the change in the viewing angle is narrow, so that various colors can be realized. There is a problem that cannot be
- An object of the present invention is to provide a novel pearl luster pigment with excellent optical properties such as sparkling and a wide range of color change according to a change in viewing angle and a method for producing the same.
- a pearl luster pigment according to an embodiment of the present invention for achieving the above object is a glass flake substrate
- a second metal oxide layer coated on top of the oxide layer includes,
- the glass flake substrate is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl
- D 10 value 40 to 80 ⁇ m
- D 50 value 160 to 250 ⁇ m
- D 90 value 350 to 600 ⁇ m
- thickness 500 nm or more.
- a method for producing a pearlescent pigment according to an embodiment of the present invention for achieving the above object is (a) a D 10 value of 40 to 80 ⁇ m, a D 50 value of 160 to 250 ⁇ m, and a D 50 value of 350 to 600 ⁇ m Forming a suspension by mixing a substrate including glass flakes having a D 90 value and having a thickness of 500 nm or more in purified water (DIwater) and then stirring and dispersing; (b) titrating the first soluble inorganic metal salt solution to the suspension in step (a) and then hydrolyzing the first soluble inorganic metal salt solution to coat the surface of the flakes with a first metal oxide layer; (c) titrating a soluble inorganic salt solution containing MgO ⁇ SiO 2 to the suspension in step (b), and then hydrolyzing the soluble inorganic salt solution so that an intermediate oxide layer is coated on the surface of the first metal oxide layer step; and (d) titrating the second
- the pearlescent pigment according to the present invention uses glass flakes having a limited size distribution as a substrate, and is formed by coating a multi-layered metal oxide layer including a low refractive index material layer between high refractive index material layers on the substrate, In addition to characteristics such as high luminance, high gloss, and high chroma, an improved sparkling effect can be implemented.
- the pearl luster pigment of the present invention uses glass flakes having a limited size distribution as a base material, an effect of a wide color change range according to a change in an observation viewing angle can be realized.
- FIG. 1 is a SEM photograph showing a cross section of a pearl luster pigment according to an embodiment of the present invention.
- 2 to 4 are graphs showing color difference value ranges of pearl luster pigments according to Examples of the present invention and Comparative Examples.
- FIG. 1 is a SEM photograph showing a cross section of a pearl luster pigment according to an embodiment of the present invention.
- the pearlescent pigment 100 includes a glass flake substrate 110, a first metal oxide layer 120 on the substrate 110, and the first metal oxide layer ( 120) and an intermediate oxide layer 130 formed of MgO ⁇ SiO 2 and a second metal oxide layer 140 on the intermediate oxide layer 130.
- the pearlescent pigment of the present invention uses a glass flake substrate, in particular, the glass flake substrate has a D 10 value of 40 to 80 ⁇ m, a D 50 value of 160 to 250 ⁇ m and a D 90 value of 350 to 600 ⁇ m, and have more than one thickness.
- D 10 , D 50 , and D 90 mean the average particle diameter in the 10% area, the average particle diameter in the 50% area (ie, the total average particle diameter), and the average particle diameter in the 90% area, respectively.
- Conventional pearl luster pigments have used several platelet-type substrates such as synthetic mica in addition to glass flakes.
- conventional plate-type substrates could realize a certain color intensity, but due to lack of user research and understanding of the characteristics, size, and thickness of the substrate, the pigment using the conventional plate-type substrate did not exhibit a sparkling effect, and the observation viewing angle There was a problem with a narrow range of color change according to the change of .
- the present invention has a D 10 value of 40 to 80 ⁇ m, a D 50 value of 160 to 250 ⁇ m, and a D 90 value of 350 to 600 ⁇ m, and a pearlescent pigment is improved by using a glass flake substrate having a thickness of 500 nm or more It was confirmed that it can have a sparkling effect.
- the glass flake substrate of the present invention has a D 10 value of 40 to 80 ⁇ m, a D 50 value of 160 to 250 ⁇ m, and a D 90 value of 350 to 600 ⁇ m. Accordingly, the pigment of the present invention has high color intensity and sparkling effect, and can implement various colors depending on the viewing angle.
- the glass flake substrate of the present invention has a thickness of 500 nm or more in addition to the above-described size distribution. Accordingly, the pigment of the present invention has high color intensity and sparkling effect, and can realize various colors depending on the viewing angle.
- the glass flake substrate of the present invention may have a thickness of 1 ⁇ m to 6 ⁇ m.
- the glass flake substrate of the present invention all glass component flake substrates may be used.
- the glass flake substrate may include borosilicate or borosilicate doped with at least one of Ti, Zn, and Ca.
- the pearl luster pigment 100 is formed by coating the substrate 110 with the first metal oxide layer 120 / the intermediate oxide layer 130 / the second metal oxide layer 140 .
- the first and second metal oxide layers 120 and 140 mean a metal oxide layer having a high refractive index having a higher refractive index than the intermediate oxide layer 130 formed of MgO ⁇ SiO 2 , preferably TiO 2 , Fe 2 O 3 may be formed as an oxide layer as a main component.
- the intermediate oxide layer 130 is formed of a metal oxide having a refractive index (n) of 1.8 or less, and may be formed using a metal oxide containing MgO ⁇ SiO 2 in the present invention.
- a metal oxide layer having a high refractive index/low refractive index/high refractive index is formed on the surface of the platelet-shaped substrate 110.
- (TiO 2 or Fe 2 O 3 )/(MgO ⁇ SiO 2 )/(TiO 2 or Fe 2 O 3 ) may be coated on the substrate.
- each of the first and second metal oxide layers 120 and 140 and the intermediate oxide layer 130 is preferably coated with a thickness of 20 nm to 500 nm.
- the thickness of the first and second metal oxide layers 120 and 140 is preferably 30 nm to 130 nm, and the thickness of the intermediate oxide layer 130 is preferably 120 to 300 nm.
- the pearl luster pigment 100 has a different color observed with the naked eye according to the sum of the respective thicknesses of the first and second metal oxide layers 120 and 140 and the intermediate oxide layer 130 or the respective thickness ratio thereof. However, it is difficult to implement the color when the thickness is out of the above range.
- the pearlescent pigment 100 is used for applications in which the pearlescent pigment is used, such as various paints, printing inks, floor coverings, wallpaper, special paper, plastics, leather products, accessories, cosmetics, ceramics, artificial marble, etc. It is advantageously used for various purposes such as coloring in various industrial fields of the industry, and has an improved sparkling effect along with a color of high chroma.
- a substrate comprising glass flakes having a D 10 value of 40 to 80 ⁇ m, a D 50 value of 160 to 250 ⁇ m and a D 90 value of 350 to 600 ⁇ m, and a thickness of 500 nm or more is mixed with DIwater After stirring and dispersing to form a suspension;
- step (b) titrating the first soluble inorganic metal salt solution to the suspension in step (a) and then hydrolyzing the first soluble inorganic metal salt solution to coat the surface of the flakes with a first metal oxide layer;
- step (c) titrating a soluble inorganic salt solution containing MgO ⁇ SiO 2 to the suspension in step (b), and then hydrolyzing the soluble inorganic salt solution so that an intermediate oxide layer is coated on the surface of the first metal oxide layer step;
- step (d) titrating the second soluble inorganic metal salt solution to the suspension in step (c) and then hydrolyzing the second soluble inorganic metal salt solution so that the surface of the intermediate oxide layer is coated with a second metal oxide layer;
- a glass flake substrate having a certain size used as a substrate is mixed with purified water (DIwater) and then stirred and dispersed to form a suspension.
- DIwater purified water
- the characteristics of the glass flake substrate are as described above.
- the substrate solid content in the suspension it is preferable to mix the substrate solid content in the suspension to be 5 to 20% by weight.
- the subsequent oxidation layer formation reaction may not occur or may be insufficiently performed.
- the reaction efficiency may decrease.
- the temperature of the suspension is first raised to 60 to 90 °C.
- the reason for heating the suspension in this way is that when the temperature of the suspension is less than 60° C., the coating state is not uniform, and the size and shape of the material to be coated are very irregular. And, when the temperature of the suspension exceeds 90 ° C., a reaction for coating may occur violently and a rough coating layer may be formed.
- the pigment does not have high chroma when the state of the coating layer is incomplete, it is preferable to maintain the temperature range as described above.
- this temperature range can be equally applied to all reactions forming the first and second metal oxide layers and the intermediate oxide layer below.
- the first soluble inorganic metal salt solution is titrated into the suspension, and then the first soluble inorganic metal salt solution is hydrolyzed so that the first metal oxide layer is coated on the surface of the flakes. perform the steps
- the inorganic metal salt is SnCl 4 , TiCl 4 , TiOCl 2 , TiOSO 4 , FeCl 3 , FeSO 4 , SiCl 4 , ZrOCl 2 , Na 2 O ⁇ SiO 2 ⁇ 5H 2 O, MnCl 2 , MgCl 2 , AlCl 3 and CoCl It includes one selected from the two or one consisting of a mixture of one or more.
- the first soluble inorganic metal salt solution in which the inorganic metal salt is dissolved is dropped dropwise into the suspension to allow hydrolysis to occur.
- the pH value of the suspension is 1 to 9.
- the coating of the first metal oxide layer is not normally performed, and when the pH exceeds 9, the coating material is not uniform and has a very irregular size and shape. Therefore, the coating state becomes very rough, so that the pigment does not have high chroma.
- the pH value is kept constant at a level where the coverage of the first metal oxide layer formed on the surface of the substrate is 1 to 50%, and the reflux process reduces the impact caused by the reaction pH and sufficiently coats the material. to be coated on the surface.
- the reflux time is less than 10 minutes, a sufficient coverage cannot be obtained and impact may be applied to the substrate, causing cracks.
- the reflux time exceeds 30 minutes, cracking of the substrate itself or separation of the coating layer due to stirring may occur.
- the temperature of the suspension in which the solid coated with the first metal oxide layer on the surface of the substrate is mixed is again raised to 60 to 90 °C.
- the temperature range is a temperature range for forming an optimal coating layer as described above.
- the soluble inorganic salt solution is hydrolyzed to coat the surface of the first metal oxide layer with MgO ⁇ SiO 2 .
- a layer formed by coating MgO ⁇ SiO 2 alone or together with MgO ⁇ SiO 2 and another oxide is referred to as an oxide layer.
- the soluble inorganic salt solution is made of one selected from water glass, MgCl 2 , silicate, AlCl 3 , KCl 3 and boric acid, or a mixture of one or more.
- the pH value of the suspension is set to 4 to 14.
- the pH is less than 4, the coating of the oxide layer is not normally performed, and the coating material is not uniform and has a very irregular size and shape, so that the pigment does not have high chroma.
- the pH value is adjusted so that the coverage of the oxide layer formed on the surface of the substrate is 1 to 30% in the case of high chroma and high gloss pigments, and 30 to 90% in the case of multi-color pigments. It is desirable to do
- the oxide layer coverage can be increased up to 3 times compared to the case of gloss pigments, and accordingly, the entire oxide layer for pigments with high gloss and high chroma and for pigments with multi-colors can be increased.
- the weight ratio can be varied.
- a pigment having high gloss and high chroma characteristics it has optimal performance when it is 5 to 10% by weight based on the total weight of the finished pigment. That is, when the proportion of the oxide layer was less than 5% by weight of the total weight of the total pigment, high gloss characteristics were deteriorated, and when the proportion of the oxide layer was greater than 10% by weight, high chroma characteristics were deteriorated.
- the preferred content ratio of the oxide layer according to the present invention is 5 to 35% by weight, but is not always limited thereto, and may vary depending on the type of substrate, the material to be coated, and the coating thickness.
- the oxide layer of the present invention formed as described above has MgO ⁇ SiO 2 as a main component, and is made of one or more mixtures selected from SiO 2 , MgO ⁇ Al 2 O 3 , K 2 O ⁇ SiO 2 and Mg 2 SiO 4 . It may further include what is done.
- Such an oxide layer serves as a low refractive index layer in a pigment, and can solve problems such as cracks that occur when only SiO 2 is formed as a conventional low refractive index layer.
- MgO ⁇ SiO 2 oxide layer it is easy to control the thickness of the low refractive index layer, and it is possible to easily exhibit high gloss, high chroma, and multi-color characteristics.
- a second metal oxide layer is coated on top of the oxide layer, and the process proceeds in the same manner as the first metal oxide coating process.
- the suspension coated with the second metal oxide layer is filtered, washed with deionized water and dried, and the residue is calcined and screened to complete the preparation of the pearlescent pigment according to the present invention.
- the pearlescent pigment of the present invention coated with a multi-layered seven-layer structure includes a low refractive index layer and a high refractive index layer formed on top of the transparent substrate layer, and has high gloss, high chroma, and excellent multi-color characteristics.
- the present invention has a D10 value of 40 to 80 ⁇ m, a D50 value of 160 to 250 ⁇ m, and a D90 value of 350 to 600 ⁇ m, and a pearlescent pigment is improved by using a glass flake substrate having a thickness of 500 nm or more It can have a sparkling effect.
- borosilicate flakes having a size distribution of D 10 65.334 ⁇ m, D 50 183.040 ⁇ m, and D 90 412.243 ⁇ m and a thickness of 1.2 ⁇ m were added to 1.5 L demineralized water and stirred to form a slurry.
- the slurry was heated to 85°C, and when the temperature reached 85°C, HCl solution was added to adjust the pH of the slurry to 2.5.
- the size distribution of the borosilicate flakes was measured using a particle size analyzer (Master Sizer 2000 from Malvern Instruments). In addition, the average thickness of borosilicate flakes was measured through electron microscope observation.
- TiCl 4 solution TiCl 4 content 30.0% by weight
- TiCl 4 content 30.0% by weight
- MgO ⁇ SiO 2 solution MgO ⁇ SiO 2 content: 15.0% by weight
- the pH of the slurry was adjusted to 2.5 by addition of HCl solution and then stirred at reflux for an additional 15 minutes.
- TiCl 4 solution TiCl 4 content 30.0% by weight
- TiCl 4 content 30.0% by weight 120 g was weighed and titrated to the slurry at a constant rate over 4 hours while maintaining a constant pH with a 10-50% NaOH diluted solution. After titration, it was refluxed for 10 minutes.
- the size distribution of the borosilicate flakes was measured using a particle size analyzer (Master Sizer 2000 from Malvern Instruments). In addition, the average thickness of borosilicate flakes was measured through electron microscope observation.
- TiCl 4 solution TiCl 4 content 30.0% by weight
- TiCl 4 content 30.0% by weight
- MgO•SiO 2 solution MgO•SiO 2 content: 15.0% by weight
- MgO•SiO 2 content 15.0% by weight
- the pH of the slurry was adjusted to 2.5 by addition of HCl solution and then stirred at reflux for an additional 15 minutes.
- TiCl 4 solution TiCl 4 content 30.0% by weight
- TiCl 4 content 30.0% by weight 120 g was weighed and titrated to the slurry at a constant rate over 4 hours while maintaining a constant pH with a 10-50% NaOH diluted solution. After titration, it was refluxed for 10 minutes.
- borosilicate flakes having a size distribution of D 10 75.708 ⁇ m, D 50 177.288 ⁇ m, and D 90 384.897 ⁇ m and having a thickness of 1.1 ⁇ m were added to 1.5 L of demineralized water and stirred to form a slurry.
- the slurry was heated to 85°C, and when the temperature reached 85°C, HCl solution was added to adjust the pH of the slurry to 2.5.
- the size distribution of the borosilicate flakes was measured using a particle size analyzer (Master Sizer 2000 from Malvern Instruments). In addition, the average thickness of borosilicate flakes was measured through electron microscope observation.
- TiCl 4 solution TiCl 4 content: 30.0% by weight
- TiCl 4 content 30.0% by weight
- MgO ⁇ SiO 2 solution MgO ⁇ SiO 2 content 15.0% by weight
- MgO ⁇ SiO 2 content 15.0% by weight
- the pH of the slurry was adjusted to 2.5 by addition of HCl solution and then stirred at reflux for an additional 15 minutes.
- TiCl 4 solution TiCl 4 content: 30.0% by weight
- TiCl 4 content 30.0% by weight
- Comparative Example 1 in the same manner as in Example 1, except that 100 g of synthetic mica flakes having a size distribution of D 10 7.259 ⁇ m, D 50 18.366 ⁇ m, and D 90 36.876 ⁇ m and having a thickness of 0.35 ⁇ m were used.
- a pigment powder was obtained according to
- Comparative Example 2 in the same manner as in Example 2, except that 100 g of synthetic mica flakes having a size distribution of D 10 7.4759 ⁇ m, D 50 19.307 ⁇ m, and D 90 37.991 ⁇ m and having a thickness of 0.37 ⁇ m were used.
- a pigment powder was obtained according to
- Comparative Example 3 in the same manner as in Example 3, except that 100 g of synthetic mica flakes having a size distribution of D 10 10.672 ⁇ m, D 50 21.476 ⁇ m, and D 90 39.665 ⁇ m and having a thickness of 0.39 ⁇ m were used.
- a pigment powder was obtained according to
- the pigment according to the embodiment of the present invention has a higher gloss value than the comparative example.
- Dsparkle value was measured using BYK-mac i 23mm.
- the Dsparkle value of the pigment according to Example 1 is measured based on the Dsparkle value of 1 in Comparative Example 1, and the Dsparkle value of the pigment according to Example 2 is measured based on the Dsparkle value of 1 in Comparative Example 2.
- the Dsparkle value of the pigment according to Comparative Example 3 is measured based on the Dsparkle value of 1.
- the pigment according to the embodiment of the present invention has a very large Dsparkle value compared to the comparative example. These results can be identified as being caused by differences in substrates, and the fact that the Dsparkle value is large indicates that the sparkling effect of the Example is superior to that of the Comparative Example.
- Color difference values were measured using BYK-mac i 23mm.
- the color difference value range of the pigment according to Comparative Example falls within the color difference value range of the pigment according to Example.
- the pigments according to Examples exhibit a wider range of colors than the pigments according to Comparative Examples, and the pigments according to Examples can express various colors depending on the viewing angle than the pigments according to Comparative Examples. .
- the pigment according to the embodiment of the present invention has a wider color difference value range than the comparative example. It can be understood that these results are caused by differences in substrates, and the fact that the range of color difference values is wide can be seen that the embodiment can express various colors depending on the viewing angle.
- the present invention is an invention derived from research on the development and commercialization of metal oxide multi-layer coating technology with Flip Flop effect in the 2020 Chungbuk Materials, Parts, and Equipment Technology Development Support Project of Chungcheongbuk-do and Chungbuk Institute of Science and Technology Innovation.
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Abstract
Description
20° | 60° | 85° | |
실시예 1 | 120.67 | 113.96 | 100.42 |
실시예 2 | 117.97 | 118.93 | 97.24 |
실시예 3 | 114.52 | 112.52 | 105.72 |
비교예 1 | 109.77 | 108.77 | 97.60 |
비교예 2 | 111.68 | 109.05 | 94.10 |
비교예 3 | 112.88 | 109.60 | 101.18 |
20° | 60° | 85° | |
실시예 1 | 30.3 | 66.22 | 52.68 |
실시예 2 | 25.78 | 74.96 | 53.78 |
실시예 3 | 16.58 | 59.18 | 50.54 |
비교예 1 | 21.56 | 54.62 | 42.66 |
비교예 2 | 15.72 | 55.44 | 39.08 |
비교예 3 | 13.52 | 55.58 | 46.56 |
15 | 45 | 75 | |
실시예 1 | 27.61 | 19.54 | 4.48 |
실시예 2 | 26.9 | 12.68 | 6.82 |
실시예 3 | 20.14 | 19.65 | 7.22 |
h | ||||||
-15 | 15 | 25 | 45 | 75 | 110 | |
실시예1 | 118.94 | 98.71 | 95.27 | 92.1 | 192.85 | 247.53 |
비교예1 | 130.76 | 106.35 | 101.11 | 97.87 | 118.52 | 180 |
실시예2 | 67.64 | 27.5 | 12.99 | 334.32 | 302.03 | 274.32 |
비교예2 | 75.27 | 49.55 | 38.33 | 24.6 | 26.7 | 46.65 |
실시예3 | 340.93 | 312.01 | 301.64 | 287.37 | 280 | 272.86 |
비교예3 | 339.57 | 311.54 | 302.42 | 287.53 | 283.57 | 283.73 |
Claims (14)
- 글라스 플레이크 기재;상기 기재의 상부에 피복된 제1금속산화물층;상기 제1금속산화물층 상부에 피복된 MgOㆍSiO2를 포함하는 중간 산화물층; 및상기 산화물층 상부에 피복된 제2금속산화물층;을 포함하며,상기 글라스 플레이크 기재는40~80㎛의 D10 값, 160~250㎛의 D50 값 및 350~600㎛의 D90 값을 갖고, 500nm 이상의 두께를 갖는진주 광택 안료.
- 제1항에 있어서,상기 글라스 플레이크 기재는보로실리케이트 또는 Ti, Zn 및 Ca 가운데 1종 이상이 도핑된 보로실리케이트를 포함하는진주 광택 안료.
- 제1항에 있어서,상기 글라스 플레이크 기재는1~6 ㎛의 두께를 갖는진주 광택 안료.
- 제1항에 있어서,상기 중간 산화물층은SiO2, MgOㆍAl2O3, K2OㆍSiO2 및 Mg2SiO4 중 선택된 하나 또는 둘 이상의 혼합물을 더 포함하는진주 광택 안료.
- 제1항에 있어서,상기 안료는도료, 인쇄용 잉크, 장판, 벽지, 특수지, 플라스틱, 피혁제, 악세서리, 화장품, 세라믹 및 인조대리석 중 적어도 어느 하나에 사용되는진주 광택 안료.
- (a) 40~80㎛의 D10 값, 160~250㎛의 D50 값 및 350~600㎛의 D90 값을 갖고, 500nm 이상의 두께를 갖는 글라스 플레이크를 포함하는 기재를 정수(DIwater)에 혼합한 후 교반 및 분산시켜 현탁액을 형성하는 단계;(b) 상기 (a) 단계의 현탁액에 제1가용성 무기 금속염 용액을 적정한 후, 상기 제1가용성 무기 금속염 용액을 가수분해시켜서 상기 플레이크의 표면에 제1금속산화물층이 피복되도록 하는 단계;(c) 상기 (b) 단계의 현탁액에 MgOㆍSiO2를 포함하는 가용성 무기염 용액을 적정한 후, 상기 가용성 무기염 용액을 가수분해시켜서 상기 제1금속산화물층 표면에 중간 산화물층이 피복되도록 하는 단계; 및(d) 상기 (c) 단계의 현탁액에 제2가용성 무기 금속염 용액을 적정한 후, 상기 제2가용성 무기 금속염 용액을 가수분해시켜서 상기 중간 산화물층의 표면에 제2금속산화물층이 피복되도록 하는 단계;를 포함하는진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 (a) 단계의 현탁액은고체 함유량이 5 ~ 20 중량%인진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 (b) 내지 (d) 단계의 현탁액은60 ~ 90℃를 유지하도록 하는 것을 특징으로 하는 진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 제1가용성 무기 금속염 용액 및 제2가용성 무기 금속염 용액은SnCl4, TiCl4, TiOCl2, TiOSO4, FeCl3, FeSO4, SiCl4, ZrOCl2, Na2OㆍSiO2ㆍ5H2O, MnCl2, MgCl2, AlCl3 및 CoCl2 중 선택된 하나 또는 둘 이상의 혼합물을 더 포함하는진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 가용성 무기염 용액은물유리, MgCl2, 규산염, AlCl3, KCl3 및 붕산 중 선택된 하나 또는 둘 이상의 혼합물을 더 포함하는진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 중간 산화물층은SiO2, MgOㆍAl2O3, K2OㆍSiO2 및 Mg2SiO4 중 선택된 하나 또는 둘 이상의 혼합물을 더 포함하는진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 중간 산화물층은상기 광택 안료 조성물 전체 100 중량%에 대하여 5 ~ 35 중량%를 포함하는진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 (b) 단계 또는 상기 (d) 단계의 현탁액은pH값을 1 ~ 9로 조정하고, 용액의 적정 완료 후 10 ~ 30분 동안 환류시키는진주 광택 안료 제조 방법.
- 제6항에 있어서,상기 (c) 단계의 현탁액은pH 4 ~ 14로 조정하고, 용액의 적정 완료 후 30 ~ 60분 동안 환류시키는진주 광택 안료 제조 방법.
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EP22833597.2A EP4365242A1 (en) | 2021-06-28 | 2022-06-28 | Multi-color pearlescent pigment with improved sparkling effect and preparation method therefor |
US18/270,939 US20240084145A1 (en) | 2021-06-28 | 2022-06-28 | Multi-color pearlescent pigment with improved sparkling effect and preparation method therefor |
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KR20120043119A (ko) * | 2009-08-19 | 2012-05-03 | 엑카르트 게엠베하 | 비-실버 간섭 컬러 및 협소한 크기 분포를 갖는 고광택 다층 효과 안료 및 이의 제조 방법 |
KR20140011347A (ko) * | 2011-03-28 | 2014-01-28 | 엑카르트 게엠베하 | 내후성 진주광택 안료, 그 제조 방법 및 용도 |
KR20170095915A (ko) * | 2014-12-19 | 2017-08-23 | 엑카르트 게엠베하 | 고 투명도, 고 채도 및 고 휘도를 갖는 효과 안료, 그의 제조 방법 및 그의 용도 |
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KR20230001594A (ko) | 2023-01-05 |
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EP4365242A1 (en) | 2024-05-08 |
JP2024502108A (ja) | 2024-01-17 |
CN116745365A (zh) | 2023-09-12 |
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